Whether at home or on the road, for desktop or laptop, an external reader is the ideal companion for your digital media. Imagine being able to put away your digital camera USB cable and simply copy pictures via a card.This USB.2.0 SDHC SD MMC Memory Card Reader Grey, transfers data or images from flash cards to any host system. Get Power supply via USB port. No external power supply required. By opening up a direct gateway between your digital media and your desktop or laptop, you avoid the hassle of moving photos, music, data and more between multiple media platforms.